Gemini 3 Flash Vision vs Mistral Large 3 Instruct: which model should you choose?
We compared Gemini 3 Flash Vision and Mistral Large 3 Instruct on price, context window and 12 benchmarks. Gemini 3 Flash Vision has the stronger average benchmark score; Mistral Large 3 Instruct is cheaper on a blended 3:1 basis.
Gemini 3 Flash Vision
Gemini 3 Flash Vision is a multimodal model from Google DeepMind. It offers a 400,000-token context window, costs $15.06 per million input tokens and $82.14 per million output tokens, and averages 81.9 across the index's benchmark suite.
- Input
- $15.06 / 1M
- Output
- $82.14 / 1M
- Context
- 400,000
- Avg score
- 81.9
- Open weights
- No
Mistral Large 3 Instruct
Mistral Large 3 Instruct is a multimodal model from Mistral AI. It offers a 400,000-token context window, costs $5.31 per million input tokens and $22.47 per million output tokens, and averages 81.1 across the index's benchmark suite.
- Input
- $5.31 / 1M
- Output
- $22.47 / 1M
- Context
- 400,000
- Avg score
- 81.1
- Open weights
- Yes
Specification comparison
| Spec | Gemini 3 Flash Vision | Mistral Large 3 Instruct | Edge |
|---|---|---|---|
| Input price / 1M | $15.06 | $5.31 | B |
| Output price / 1M | $82.14 | $22.47 | B |
| Context window | 400,000 | 400,000 | Tie |
| Max output | 32,768 | 65,536 | B |
| Average score | 81.9 | 81.1 | A |
| Arena Elo | 1430.3 | 1446.2 | B |
| Open weights | No | Yes | B |
Benchmark comparison
Gemini 3 Flash Vision wins 5, Mistral Large 3 Instruct wins 6, and 1 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Gemini 3 Flash Vision | Mistral Large 3 Instruct | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 81.8 | 82.3 | 0.5 | Mistral Large 3 Instruct |
| GPQA Diamond | 75.7 | 79.8 | 4.1 | Mistral Large 3 Instruct |
| SWE-bench Verified | 71.4 | 71.9 | 0.5 | Mistral Large 3 Instruct |
| HumanEval | 84.5 | 84.2 | 0.3 | Gemini 3 Flash Vision |
| MATH-500 | 87.5 | 83.4 | 4.1 | Gemini 3 Flash Vision |
| AIME 2025 | 82.4 | 76.2 | 6.2 | Gemini 3 Flash Vision |
| LiveCodeBench | 73.2 | 75.1 | 1.9 | Mistral Large 3 Instruct |
| IFEval | 86.9 | 87.6 | 0.7 | Mistral Large 3 Instruct |
| TruthfulQA | 85.5 | 85.5 | 0.0 | Tie |
| HellaSwag | 91.5 | 89.1 | 2.4 | Gemini 3 Flash Vision |
| MMMU | 80.3 | 76.5 | 3.8 | Gemini 3 Flash Vision |
| Arena Elo | 1430.3 | 1446.2 | 15.9 | Mistral Large 3 Instruct |
Price analysis
On a blended 3:1 input-to-output basis, Gemini 3 Flash Vision costs about $31.83 per million tokens and Mistral Large 3 Instruct costs about $9.60. Mistral Large 3 Instruct is roughly 70% cheaper than Gemini 3 Flash Vision. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Both models list a 400,000-token context window. That is enough for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Gemini 3 Flash Vision wins 5, Mistral Large 3 Instruct wins 6, and 1 are tied. On the index average, Gemini 3 Flash Vision leads Mistral Large 3 Instruct by 0.8 points (81.9 versus 81.1).
The price picture favours Mistral Large 3 Instruct. The context picture is effectively a tie. Those two dimensions often matter more than a few benchmark points once a model is good enough for the task.
If you need a single default, start with Gemini 3 Flash Vision for quality-sensitive work and Mistral Large 3 Instruct for high-volume, well-scoped tasks. Run both on a sample of your own traffic before locking in a choice.
Choose Gemini 3 Flash Vision if
- You want the higher average benchmark score in this index.
Choose Mistral Large 3 Instruct if
- Unit cost matters and you want the cheaper blended price.
- You need the larger 65,536-token output limit.
- You need open weights for self-hosting or fine-tuning.
FAQ
Is Gemini 3 Flash Vision better than Mistral Large 3 Instruct?
On the index average, Gemini 3 Flash Vision leads Mistral Large 3 Instruct by 0.8 points (81.9 versus 81.1). The better choice depends on price, context and your task. Gemini 3 Flash Vision wins 5 benchmarks, Mistral Large 3 Instruct wins 6.
Which is cheaper, Gemini 3 Flash Vision or Mistral Large 3 Instruct?
Mistral Large 3 Instruct is cheaper on a blended 3:1 basis at about $9.60 per million tokens, versus $31.83 for Gemini 3 Flash Vision.
Which has the larger context window?
Both models list a 400,000-token context window.
Are these models open weights?
Gemini 3 Flash Vision is proprietary; Mistral Large 3 Instruct is open weights.
Which should I choose for production?
If you need a single default, start with Gemini 3 Flash Vision for quality-sensitive work and Mistral Large 3 Instruct for high-volume, well-scoped tasks. Run both on a sample of your own traffic before locking in a choice.